Home / 130,481.15-195,768.36-80,503.07

Finding the Fourth Proportional to 130,481.15, 195,768.36 and 80,503.07

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Solution

The fourth proportional to 130,481.15, 195,768.36 and 80,503.07 is: 120,783.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,481.15 : 195,768.36 = 80,503.07 : x
  2. Step 2: Convert to fraction form
    130,481.15/195,768.36 = 80,503.07/x
  3. Step 3: Cross multiply
    130,481.15x = 195,768.36 × 80,503.07
  4. Step 4: Simplify right side
    130,481.15x = 15,759,953,010.02
  5. Step 5: Solve for x
    x = 15,759,953,010.02/130,481.15
  6. Step 6: Final answer
    x = 120,783.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.